Windows 10 reached EOS (end of support) on October 14, 2025. If you are on Windows 10, see this article.

Avatar for Username

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More
This thread was archived. اگر به کمک نیاز دارید لطفاً یک سؤال بپرسید.
Solved Archived

This message was not delivered for the following reason: 553 Sender is on user denylist (Mode: normal) To address: Can someone tell me how to fix this please?

Thunderbird Other
christ1 replied
pureproducts
pureproducts

I can receive emails from this person, but I cannot send without getting a return to sender reply with this message? Appreciate your help.

I can receive emails from this person, but I cannot send without getting a return to sender reply with this message? Appreciate your help.

All Replies (1)

christ1
christ1
  • Top 25 Contributor
  • Moderator

Chosen Solution

Talk to your email provider. The error message is from them.